Vacuum-insulated receptacle and protective jacket therefor



. O 21, 1930- c. w. DAVIS Ef AL VACUUM INSULATED RECEPTACLE ANDPROTECTIVE JACKET THEREFOR ,Filed Jan. 5, 1929 Gwmd I INVEVNTVORJ, 3y II,

. A TTb NEY.

' retaining properties are enhanced and wherep i oined to the body 9 bya machlne 0 eration.

Patented Oct. 21, 1930 UNITED STATES PATENT OFFICE CORTLAND W. DAVIS, 01OAK PARK, AND FRED I. BECKER, OI CHICAGO, ILLINOIS, ABSIGNOBS TO THEMANTLE LAMP COMPANY OF AMERICA, OI -('JHICAGO, ILLINOIS,

A CORPORATION OI ILLINOIS VACUUM-INSULATED. BECEPTAGLE AND PROTECTIVEJACKET THEREFOR Application Med. January 5, 1929. Serial No. 880,494.

The invention relates to vacuum-insulated vitreous receptacles in whicha metal protective jacket is employed, an object thereof being toeliminate the usual springs and rubbers which are employed within themetal jacket in ordinary vacuum bottles to insure against shocks.

A further object of the invention is to provide a unitary structurewherein there will be no seepage into the space between the double wallof the glass receptacle and its protecting jacket.

Further objects of the'invention are to protect the frangible glass lipof the contalner with a collar over-lapping a portion of said glass lip,and at the sametime, produce a sanitary pouring lip.

The invention, furthermore, involves details whereby the construction ofsuch a recepta'cle is simplified'and the manufacture thereof isfacilitated, whereby the cost of manufacture is reduced, whereby theheatby the protective jacket is strengthened and its appearance isimproved.

The invention will be best understood if reference be made to theaccompanying drawing in which:

Figure 1, is a view, part1 showing a construction embo ying theinvention, and v Figure 2, is a cross-sectional view taken on the line2-2 of Figure 1.

Referring to the drawing, 1 isa vacuuminsulated glass vessel having anouter wall 2 and an inner wall 3 welded together at their top edges, butelsewhere separated from each other so as to leave a space 4 in which avacuum may be produced in a well-known manner.

The outer wall 2 has a neck 2, terminating in a pourin lip 2", and theinner wall has a neck 3", said neck 2 being upwardly flared and saidneck 3 being internally and suitably shaped at 3" to receive a corkageelement C. The neck 2"- is Iprovided with a circum ferential seat 3, wich is adapted to mate with a part of a protective jacket.

The lower closed ends of the walls 2, 3, are respectively providedwith'straight and parin section,

allel portions 5 and 6, the portion 5 terminating in a curved portion 5,below it, and the portion 6 terminating in a curved portion 6", aboveit. Spacers, such as 7, are disposed between said straight portions 5,6, and are prevented from moving up or down by said curved portions 5",6. This construction avoids the necessity of makin the spacers 7 ofconcavo-convex form, an admits of the use of spacers cut from flatstock. It also prevents such shifting of the spacers as would take placeif concavo-convex spacers weredisposed between concave and convexportions of the walls 2, 3. Furthermore, said construction prevents theinner wall 3 from moving longitudinally in one direction within the wall2 before the union of said-walls has been effected.

Surrounding the vessel 1, is a sheet-metal protective jacket 8 having acylindrical body 9 and a bottom 10 which, but for the requirements ofmanufacture, might be an'integral art of said body 9. Said bottom& 10 isWithin the jacket 8 is a shock-a sorbing cylinder 11, of corrugatedboard or other poor conductor of heat which mainly serves as acushioning means. This cylinder not only spaces. the protective jacketfrom the vessel 1, but establishes limited contact between theseelements and, furthermore, affords spaces within its corru ations fornonconducting staticbodies of an which supplement' heat retention. 1

The jacket 8 is madeofrom a fiat piece of material panelled as at 8 togive it strength and at the same time add to the appearance of thejacket. The panelling also enables the user to get. a better grip on thejacket when the bottle is being handled, and, furthermore, serves toconceal the otherwise unsi htly seam 8;

n the vacuum bottles it is customary to make the jacket from steel, withan upper section of aluminum, brass or similar rustproof metal. Theconstruction of the vacuum bottle herein disclosed is such that itpermits the use of a minimum amount of non-corrosive materials, thuscheapening the cost of the protective jacket. This result is attained byextending the jacket 8 somewhat above the cylindrical body of the vessel1 Also, since the jacket 8 is truly cylindrical it is easier tomanufacture than is a jacket having an inturned or conical top.

At the top of the jacket 8 is a collar 12, united to said jacket by aseam 13, screwthreaded at 12, and having at its top an in turned flange12 and corrugations 12, said inturned flange 12 terminating within thecircumferential seat 3 to thereby prevent the vessel 1 from rising inthe jacket 8, and said corrugations 12 interlocking with a seal 14 whichengages with the flared neck 2 to thereby prevent said vessel frommoving downward within said jacket 8. This seal 14 is made from anymaterial which will not be affected by water and may be made to conform,exteriorly and interiorly, to said corrugations 12 and said flared neck2. The seam 13 is preferably soldered, as at 13*.

A drinking, cup 15, having screw-threads 15, engaging the screw threads12* of said collar 12, encloses and protects the several parts at thetop of the device.

The making of the device is greatly facilitated and the cost ofmanufacture decreased by the construction thereof, herein described, itbeing possible to unite the cylindrical wall 9 and the bottom 10 of theprotective jacket,

by an expeditious and simple seaming operation without the use of solderat the joint between the two parts; and, also, to assemble and unite thevessel 1 and the collar 12 be fore the protective jacket 8 is joined tosaid collar. at which time the interior of the collar 12 is open frombelow to give ready access to the substance constituting the seal 14:.

\Vhen. therefore, the two units respectively including the cylindricalwall 9 and the bottom 10, and the vessel 1 and the collar 12, have beenproduced. there is no difliculty in telescoping the one into the other,and soldering the then proximate edges of the cylindrical wall 9 and thecollar 12.

The seaming operation may be performed by an automatic machine operatedby an unskilled laborer at slight cost, and the soldering operation, ifperformed by hand, is inexpensive since that also may be conducted by anunskilled laborer.

Having thus described our invention, what we claim is:

1. A protected vacuum-insulated receptacle, including a double walledglass vessel having a cylindrical body and terminating at its upper endin a flared neck, a cylindrical protective jacket surrounding saidvessel and extending above the cylindrical body thereof, and a collarsurmounting said jacket and secured to and sustainingsaid vessel.

2. A protected vacuum-insulated receptacle, including a double-walledglass vessel having a pouring lip and a circumferential seat surroundingsaid lip, and a multipart jacket having a flange terminating within saidseat.

3. A protected vacuum-insulated receptacle, including a double walledglass vessel having an upwardly flared neck, and a circumferential seat,a protective jacket having a corrugated collar terminating in said seat,and a seal disposed between and engaging said neck and said corrugationsand constituting the entire support for said vessel.

4. A vacuum insulated receptacle, including spaced glass walls providedwith parallel portions each terminating in a curved portion, and spacersdisposed between said parallel portions and abutting and prevented frommoving longitudinally by said curved portions.

5. A jacket for a heat-insulated glass vessel having panels and ribstherebetween, and a joint substantially coinciding with one of saidribs.

6. A protected vacuum-insulated receptacle, including a double-walledglass container, a collar sealed to the top of said container, and aprotective jacket for said container, said jacket having a cylindricalwall and a bottom united to form a unit, and being soldered to the loweredge of said collar.

7. A protected vacuum-insulated receptacle. including a double-walledglass container, a collar sealed to the top of said container, acushioning element surrounding said container, and aprotective jacketfor said container, said jacket having a-cylindrical wall and a bottomunited to form aunit, and being unitedvto the lower edge of said collar.

8. A protected vacuum-insulated receptacle, including adouble-walledglass container, a collar sealed to the top of said container, acorrugated cushioning element surrounding said container, and aprotective jacket for said container, said jacket having a cylindricalwall and a bottom united to form a unit, and being soldered to the loweredge of said collar.

In testimony whereof we aflix our signatures.

CORTLAND W. DAVIS. FRED F. BECKER.

